The Experts below are selected from a list of 3030 Experts worldwide ranked by ideXlab platform

Major Singh - One of the best experts on this subject based on the ideXlab platform.

  • Microbiome profiling of the onion Thrips, Thrips Tabaci Lindeman (Thysanoptera: Thripidae).
    PloS one, 2019
    Co-Authors: S. J. Gawande, Sivalingam Anandhan, Ashish Ingle, P. Roylawar, Kiran Khandagale, Tushar Gawai, Alana L. Jacobson, Ramasamy Asokan, Major Singh
    Abstract:

    The gut microbial community structure of adult Thrips Tabaci collected from 10 different agro-climatically diverse locations of India was characterized by using the Illumina MiSeq platform to amplify the V3 region of the 16S rRNA gene of bacteria present in the sampled insects. Analyses were performed to study the bacterial communities associated with Thrips Tabaci in India. The complete bacterial metagenome of T. Tabaci was comprised of 1662 OTUs of which 62.25% belong to known and 37.7% of unidentified/unknown bacteria. These OTUs constituted 21 bacterial phyla of 276 identified genera. Phylum Proteobacteria was predominant, followed by Actinobacteria, Firmicutes, Bacteroidetes and Cyanobacteria. Additionally, the occurrence of the reproductive endosymbiont, Wolbachia was detected at two locations (0.56%) of the total known OTUs. There is high variation in diversity and species richness among the different locations. Alpha-diversity metrics indicated the higher gut bacterial diversity at Bangalore and lowest at Rahuri whereas higher bacterial species richness at T. Tabaci samples from Imphal and lowest at Jhalawar. Beta diversity analyses comparing bacterial communities between the samples showed distinct differences in bacterial community composition of T. Tabaci samples from different locations. This paper also constitutes the first record of detailed bacterial communities associated with T. Tabaci. The location-wise variation in microbial metagenome profile of T. Tabaci suggests that bacterial diversity might be governed by its population genetic structure, environment and habitat.

Cristina Coradini - One of the best experts on this subject based on the ideXlab platform.

  • Correlation between Thrips Tabaci attack degree and morphological features of Calendula officinalis L. flowers.
    Research Journal of Agricultural Science, 2012
    Co-Authors: Cristina Coradini, Irina Petrescu, V. Tabără, R. Coradini
    Abstract:

    The marigold is a very ornamental plant that is commonly grown in the flower garden, and occasionally as a culinary herb. Marigolds had an important economic values, its cropping knew a continual increase in the last years thanks to its usage in a more and more large area in the pharmaceutic and cosmetic domain. Thrips Tabaci are feeding drains underlying cells, leaving air- filled spaces which impart a silvery sheen and cause distortion during growth and reduction in photosynthetic capacity. In the West Plain of the country relative existed a few investigations about that pest attack on the marigolds crop, an important crop both from medical point of view and culinary point of view. The purpose of that work was to determine the correlation of pests attack degree and flowers diameter to 10 local population of Calendula officinalis L. from Arad district. In the Thrips experiments, the results showed that flowers with bigger attack degree were smaller compared to flowers with smaller attack degree. This difference in flower diameter was due to deformations of the flowers and was more pronounced at a bigger density of common Thrips. The flowers deformation and its decrease in diameter implied also the production increase, but the obtained quantity of flowers was lower. The results obtained through correlation between Thrips Tabaci attack degree and morphological features of Calendula officinalis L. flowers permitted the identification of frequency and intensity of attack, and connection between them and density of the pest. Accordingly, tobacco trips produced great damages in Calendula officinalis L. crop depreciating from a qualitative point of view, the diminution and bending flowers diameter and qualitative speaking the production decreased. The present paper belongs to a big work which had like study "Resistance testing of some species of Calendula officinalis L. to Thysanoptera pest attack through different methods/techniques of analysis concerning the improvement of raw material quality", that represented the theme of postdoctoral-dissertation.

  • THE RESPONSE OF DIFFERENT LOCAL POPULATIONS OF CALENDULA OFFICINALIS L. TO Thrips Tabaci ATTACK
    Research Journal of Agricultural Science, 2012
    Co-Authors: Cristina Coradini, Irina Petrescu, V. Tabără, Lavinia Madalina Micu, R. Z. Bejan
    Abstract:

    Marigold is one of the best known and versatile herbs in herbal medicine and is also a popular domestic remedy. The Thrips can cause serious damages and they also represent the main vectors of viruses. That is why one of the objectives of this study is to analyze their response to Thrips Tabaci attack. In purpose of identification attack frequency, attack intensity and attack degree it had been study 20 of local population of Calendula officinalis L. from diffrent localities of Caras- Severin district. In Romania relatively realised a few investigations concerning response of Calendula crops to Thrips Tabaci attack. Being a success the ones mentioned, it was assessed to make some complex investigations for teoretical argumentation and methods advancement used in identification of common Thrips attack degree, which constituted an actual matter for our country concerning the best moment of treatments applying in the crop flowers to obtain a high production and of superior quality, because that medical plant was one of those plants appreciated for its therapeutic qualities based on complex of active biologic substances. From among all local population, 20 (representing 100%) have been attacked. Even if 10 local population have provided statistical differences for the serious attack frequency and eight for intensity of the attack, only two of these have provided statistical differentiations for attack degree. The results demonstrate that Thrips are pests that occur in the culture of Calendula officinalis with significant frequency, intensity and attack degree. The local population really influences the attack, some of them being registered with small attack signs, while others were obviously preferred by pests. The results obtained through the attack of frequency and intensity identification to local populations of Calendula officinalis L.it had permitted the attack degree of tobacco trips in the marigolds' crop from the western part of the country. The present paper belongs to a big work which had like study "Resistance testing of some species of Calendula officinalis L. to Thysanoptera pest attack through different methods/techniques of analysis concerning the improvement of raw material quality", that represented the theme of postdoctoral- dissertation.

Irina Petrescu - One of the best experts on this subject based on the ideXlab platform.

  • THE RESPONSE OF DIFFERENT LOCAL POPULATIONS OF CALENDULA OFFICINALIS L. TO Thrips Tabaci ATTACK
    Research Journal of Agricultural Science, 2012
    Co-Authors: Cristina Coradini, Irina Petrescu, V. Tabără, Lavinia Madalina Micu, R. Z. Bejan
    Abstract:

    Marigold is one of the best known and versatile herbs in herbal medicine and is also a popular domestic remedy. The Thrips can cause serious damages and they also represent the main vectors of viruses. That is why one of the objectives of this study is to analyze their response to Thrips Tabaci attack. In purpose of identification attack frequency, attack intensity and attack degree it had been study 20 of local population of Calendula officinalis L. from diffrent localities of Caras- Severin district. In Romania relatively realised a few investigations concerning response of Calendula crops to Thrips Tabaci attack. Being a success the ones mentioned, it was assessed to make some complex investigations for teoretical argumentation and methods advancement used in identification of common Thrips attack degree, which constituted an actual matter for our country concerning the best moment of treatments applying in the crop flowers to obtain a high production and of superior quality, because that medical plant was one of those plants appreciated for its therapeutic qualities based on complex of active biologic substances. From among all local population, 20 (representing 100%) have been attacked. Even if 10 local population have provided statistical differences for the serious attack frequency and eight for intensity of the attack, only two of these have provided statistical differentiations for attack degree. The results demonstrate that Thrips are pests that occur in the culture of Calendula officinalis with significant frequency, intensity and attack degree. The local population really influences the attack, some of them being registered with small attack signs, while others were obviously preferred by pests. The results obtained through the attack of frequency and intensity identification to local populations of Calendula officinalis L.it had permitted the attack degree of tobacco trips in the marigolds' crop from the western part of the country. The present paper belongs to a big work which had like study "Resistance testing of some species of Calendula officinalis L. to Thysanoptera pest attack through different methods/techniques of analysis concerning the improvement of raw material quality", that represented the theme of postdoctoral- dissertation.

  • Correlation between Thrips Tabaci attack degree and morphological features of Calendula officinalis L. flowers.
    Research Journal of Agricultural Science, 2012
    Co-Authors: Cristina Coradini, Irina Petrescu, V. Tabără, R. Coradini
    Abstract:

    The marigold is a very ornamental plant that is commonly grown in the flower garden, and occasionally as a culinary herb. Marigolds had an important economic values, its cropping knew a continual increase in the last years thanks to its usage in a more and more large area in the pharmaceutic and cosmetic domain. Thrips Tabaci are feeding drains underlying cells, leaving air- filled spaces which impart a silvery sheen and cause distortion during growth and reduction in photosynthetic capacity. In the West Plain of the country relative existed a few investigations about that pest attack on the marigolds crop, an important crop both from medical point of view and culinary point of view. The purpose of that work was to determine the correlation of pests attack degree and flowers diameter to 10 local population of Calendula officinalis L. from Arad district. In the Thrips experiments, the results showed that flowers with bigger attack degree were smaller compared to flowers with smaller attack degree. This difference in flower diameter was due to deformations of the flowers and was more pronounced at a bigger density of common Thrips. The flowers deformation and its decrease in diameter implied also the production increase, but the obtained quantity of flowers was lower. The results obtained through correlation between Thrips Tabaci attack degree and morphological features of Calendula officinalis L. flowers permitted the identification of frequency and intensity of attack, and connection between them and density of the pest. Accordingly, tobacco trips produced great damages in Calendula officinalis L. crop depreciating from a qualitative point of view, the diminution and bending flowers diameter and qualitative speaking the production decreased. The present paper belongs to a big work which had like study "Resistance testing of some species of Calendula officinalis L. to Thysanoptera pest attack through different methods/techniques of analysis concerning the improvement of raw material quality", that represented the theme of postdoctoral-dissertation.

  • THE ATTACK PRODUCED BY Thrips Tabaci ON THE FLOWERS CROP FROM PROTECTED SPACES OF DIDACTICAL STATION TIMISOARA
    Annals of the University of Craiova - Agriculture Montanology Cadastre Series, 2010
    Co-Authors: Cristina Coradini Zepa, Irina Petrescu, R. Coradini
    Abstract:

    After some data of speciality literature, the greenhouses crops developed from the middle of summer to winter and represented the best medium of development of tobacco Thrips, Thrips Tabaci, that formed great populations and of a big economical impact. According to the attack produced by tobacco Thrips, Thrips Tabaci, it could affirm that insect was one of the most freqvent and important species which affected the quantity and quality of flowers production from the protected spaces. From the analized and collected data, it observed that the populations density of Thrips Tabaci oscillated between 10-28 species on the variants of experimental field before the treatment, the medium number varied between 13.00 and 19.00 species, the economical stage of damage (1/2 adults/flower) it was more broke that showed the fact of the chemical treatments applied in controlling the pest from the flower crop of protected spaces of Didactical Station of Timisoara.

R. Coradini - One of the best experts on this subject based on the ideXlab platform.

  • Correlation between Thrips Tabaci attack degree and morphological features of Calendula officinalis L. flowers.
    Research Journal of Agricultural Science, 2012
    Co-Authors: Cristina Coradini, Irina Petrescu, V. Tabără, R. Coradini
    Abstract:

    The marigold is a very ornamental plant that is commonly grown in the flower garden, and occasionally as a culinary herb. Marigolds had an important economic values, its cropping knew a continual increase in the last years thanks to its usage in a more and more large area in the pharmaceutic and cosmetic domain. Thrips Tabaci are feeding drains underlying cells, leaving air- filled spaces which impart a silvery sheen and cause distortion during growth and reduction in photosynthetic capacity. In the West Plain of the country relative existed a few investigations about that pest attack on the marigolds crop, an important crop both from medical point of view and culinary point of view. The purpose of that work was to determine the correlation of pests attack degree and flowers diameter to 10 local population of Calendula officinalis L. from Arad district. In the Thrips experiments, the results showed that flowers with bigger attack degree were smaller compared to flowers with smaller attack degree. This difference in flower diameter was due to deformations of the flowers and was more pronounced at a bigger density of common Thrips. The flowers deformation and its decrease in diameter implied also the production increase, but the obtained quantity of flowers was lower. The results obtained through correlation between Thrips Tabaci attack degree and morphological features of Calendula officinalis L. flowers permitted the identification of frequency and intensity of attack, and connection between them and density of the pest. Accordingly, tobacco trips produced great damages in Calendula officinalis L. crop depreciating from a qualitative point of view, the diminution and bending flowers diameter and qualitative speaking the production decreased. The present paper belongs to a big work which had like study "Resistance testing of some species of Calendula officinalis L. to Thysanoptera pest attack through different methods/techniques of analysis concerning the improvement of raw material quality", that represented the theme of postdoctoral-dissertation.

  • THE ATTACK PRODUCED BY Thrips Tabaci ON THE FLOWERS CROP FROM PROTECTED SPACES OF DIDACTICAL STATION TIMISOARA
    Annals of the University of Craiova - Agriculture Montanology Cadastre Series, 2010
    Co-Authors: Cristina Coradini Zepa, Irina Petrescu, R. Coradini
    Abstract:

    After some data of speciality literature, the greenhouses crops developed from the middle of summer to winter and represented the best medium of development of tobacco Thrips, Thrips Tabaci, that formed great populations and of a big economical impact. According to the attack produced by tobacco Thrips, Thrips Tabaci, it could affirm that insect was one of the most freqvent and important species which affected the quantity and quality of flowers production from the protected spaces. From the analized and collected data, it observed that the populations density of Thrips Tabaci oscillated between 10-28 species on the variants of experimental field before the treatment, the medium number varied between 13.00 and 19.00 species, the economical stage of damage (1/2 adults/flower) it was more broke that showed the fact of the chemical treatments applied in controlling the pest from the flower crop of protected spaces of Didactical Station of Timisoara.

S. J. Gawande - One of the best experts on this subject based on the ideXlab platform.

  • Microbiome profiling of the onion Thrips, Thrips Tabaci Lindeman (Thysanoptera: Thripidae).
    PloS one, 2019
    Co-Authors: S. J. Gawande, Sivalingam Anandhan, Ashish Ingle, P. Roylawar, Kiran Khandagale, Tushar Gawai, Alana L. Jacobson, Ramasamy Asokan, Major Singh
    Abstract:

    The gut microbial community structure of adult Thrips Tabaci collected from 10 different agro-climatically diverse locations of India was characterized by using the Illumina MiSeq platform to amplify the V3 region of the 16S rRNA gene of bacteria present in the sampled insects. Analyses were performed to study the bacterial communities associated with Thrips Tabaci in India. The complete bacterial metagenome of T. Tabaci was comprised of 1662 OTUs of which 62.25% belong to known and 37.7% of unidentified/unknown bacteria. These OTUs constituted 21 bacterial phyla of 276 identified genera. Phylum Proteobacteria was predominant, followed by Actinobacteria, Firmicutes, Bacteroidetes and Cyanobacteria. Additionally, the occurrence of the reproductive endosymbiont, Wolbachia was detected at two locations (0.56%) of the total known OTUs. There is high variation in diversity and species richness among the different locations. Alpha-diversity metrics indicated the higher gut bacterial diversity at Bangalore and lowest at Rahuri whereas higher bacterial species richness at T. Tabaci samples from Imphal and lowest at Jhalawar. Beta diversity analyses comparing bacterial communities between the samples showed distinct differences in bacterial community composition of T. Tabaci samples from different locations. This paper also constitutes the first record of detailed bacterial communities associated with T. Tabaci. The location-wise variation in microbial metagenome profile of T. Tabaci suggests that bacterial diversity might be governed by its population genetic structure, environment and habitat.